Lomatium grayi (Coult. & Rose) Coult. & Rose

Lomatium grayi Coult. & Rose, Contr. U. S. Nat. Herb. 7: 229. 1900.
Peucedanum millefolium S. Wats. Bot. King's Expl. 129. 1871. Not P. millefolium Sonder 1861-
1862. Peucedanum Grayi Coult. & Rose, Bot. Gaz. 13: 209. 1888. Peucedanum Grayi var. aberrans M. E. Jones, Contr. W. Bot. 10: 55. 1902. Leplotaenia filicina M. E. Jones, Contr. W. Bot. 10: 56. 1902. Cogswellia millefolia M. E. Jones, Contr. W. Bot. 12: 35. 1908. Cogswellia Grayi Coult. & Rose, Contr. U. S. Nat. Herb. 12: 450. 1909. Lomatium millefolium F. Macbr. Contr. Gray Herb. 53: 15. 1918.
Plants acaulescent or short-caulescent, 2-6.1 dm. high, from a long thickened taproot; leaves broadly obovate in general outline, excluding the petioles 10.5-26 cm. long, glabrous to scaberulous, 1-2-ternate or quinate, then 2-3-pinnate, the ultimate divisions crowded, linear to filiform, 1-11 mm. long, 0.1-0.25 mm. broad, entire, mucronulate; petioles 3.5-22 cm. long, sheathing at the base; peduncles exceeding the leaves; involucel of filiform, entire, occasionally toothed bractlets, usually shorter than the flowers, rarely deciduous; rays 7-22, spreading, 2-15 cm. long; pedicels 6-22 mm. long, the umbellets 15-30-flowered; flowers yellow; fruit ovate-oblong to oblong, 7-16 mm. long, 5-8 mm. broad, the wings much narrower than to equaling the body; oil-tubes solitary in the intervals, rarely 2 or 3, especially in the lateral, 2-4, rarely 6, on the commissure.
Type locality: Antelope Island, Salt Lake, Utah. Watson 466.
Distribution: Western Wyoming and Colorado to eastern Washington and Oregon and northeastern Nevada, 750-8400 feet (Heller & Heller 3043, Jones 5548).
50a. Lomatium Grayi var. depauperatum (M. E. Jones) Mathias, Ann. Mo. Bot. Gard. 25: 270. 1937.
Cogswellia millefolia var. depauperate M. E. Jones, Contr. W. Bot. 12: 38. 1908.
Usually lower; leaves dissected into few, small, remote, linear ultimate divisions.
Type locality: Dugway, Utah, Jones.
Distribution: Western Utah and adjacent Nevada (Cottam 4533, Jones 25,253).